IUSB vs VCOB: Grades, Fees and Holdings Compared

iShares Core Universal USD Bond ETF

IUSBANasdaq

Voya Core Bond ETF

VCOBBNYSE Arca

Overlap

No data

Expense ratio

IUSB −0.19pt a year

IUSB0.06%VCOB0.25%

Avg volume · 30D

IUSB 1432.2×the volume

IUSB6.13MVCOB4.28K

IUSB vs VCOB Performance

Dec 31, 2025 – Oct 30, 2026

−0.4%IUSB−0.4%VCOB

Expense ratio: IUSB 0.06%, better; VCOB 0.25%
Fund size: IUSB $50.2B; VCOB $88M
1Y total return: IUSB 0.0%; VCOB No data
Yield (12M): IUSB 4.32%; VCOB No data
Holdings: IUSB 18280; VCOB 809
Avg volume (30D): IUSB 6.13M sh, better; VCOB 4.28K sh
NAV per share: IUSB $44.91; VCOB $48.02
52W range

ETF.net Grade

Pillar letters and Scores for IUSB, VCOB, with each pillar’s weight
Pillar	IUSB	VCOB
Cost30% weight	A92Higher	B64
Mission25% weight	A100	A100
Risk15% weight	C54	B61Higher
Tradability15% weight	A89Higher	F18
Holdings10% weight	A76Higher	B56
Durability5% weight	A94Higher	D31

Rank among US Aggregate Bond funds

How we build Categories ›

Same Category. IUSB and VCOB are both graded against the same 114 US Aggregate Bond funds, so their Grades compare head to head.

US Aggregate Bond⁠

Category · 114 funds

See all 114 ›

IUSB ranks 2nd and VCOB 51st of 114 funds in the US Aggregate Bond Category.

Rank 1AAGGiShares Core U.S. Aggregate Bond ETFScore 87
Rank 2AIUSBiShares Core Universal USD Bond ETFScore 86
Rank 2ASCHZSchwab U.S. Aggregate Bond ETFScore 86
Rank 51BGBNDGoldman Sachs Core Bond ETFScore 63
Rank 51BVCOBVoya Core Bond ETFScore 63
Rank 54BCORBAB Core Bond ETFScore 62

Our read on each fund

ETF.net Research

IUSBAiShares Core Universal USD Bond ETF

VCOBBVoya Core Bond ETF

In short

IUSB Most core bond funds stop at investment grade. IUSB keeps going, folding high-yield USD debt into the same wrapper across roughly 18,000 bonds, for 0.06% a year.

VCOB An actively managed take on the core bond aisle: investment-grade corporates, government and mortgage debt, run by Voya's bond team at a price that undercuts the typical fund in the category.

Stated mandate

IUSB The Fund seeks to track an index of U.S.-dollar-denominated bonds spanning investment-grade and high-yield sectors.

VCOB The Fund is an actively managed ETF seeking total return through current income and capital appreciation. It normally invests at least 80% of net assets in bonds or bond-like derivatives, primarily including investment-grade corporate, government, and mortgage-related debt.

Why people hold it

IUSB 0.06% a year, a fraction of what the typical broad bond fund in its category charges, and iShares has run it since 2014.
Roughly 18,000 bonds spanning investment-grade and high-yield sectors, so one ticker covers ground a plain Agg tracker leaves on the table.ishares.com
Tracks its index closely, trades heavily, and sits on a multi-billion-dollar asset base. Income is paid monthly.
Among the strongest implementations in a crowded field of nearly 200 core bond funds.

VCOB Active mandate, not an index clone: normally at least 80% of net assets in bonds, spanning investment-grade corporate, government and mortgage-related debt.
Charges 0.25%, below the typical fund in its core-bond cohort, which is uncommon for an actively run strategy.
Pursues total return from two directions, current income plus capital appreciation, inside a standard 1940 Act ETF wrapper.

Worth knowing

IUSB That high-yield sleeve is the trade-off: more credit risk than an investment-grade-only fund, and more movement when spreads widen.
BND, SPAB and SCHZ charge 0.03%, half IUSB's fee, but they stay inside investment grade.
Payouts land monthly, but the amount floats with the coupons underneath. Nothing about the income stream is fixed.

VCOB Cheap for active, still dearer than the aisle's index heavyweights: BND, SPAB and SCHZ each charge 0.03%.
Launched in late 2025, so there is little live record of how the managers navigate a full rate cycle.
A small, lightly traded fund next to the category's household names, so bid-ask spreads are worth checking before trading.

Full IUSB profile⁠

Full VCOB profile⁠

IUSB vs VCOB Holdings

How IUSB and VCOB differ

No overlap figure

Two bond funds rarely hold the same issues.

Level by level

Countryby domicile94.6%
Asset classFixed Income100%

Sector

No Sector split for VCOB.

Country, concentration and asset class

Country by domicile

Country weights in IUSB and VCOB, widest gap first
Country	More in IUSBMore in VCOB	IUSB	VCOB
Cayman Islands	VCOB +3.3 points	3.1%	6.4%
Bermuda	VCOB +0.9 points	0.1%	1.0%
United Kingdom	IUSB +0.8 points	1.0%	0.2%
Canada	VCOB +0.6 points	1.2%	1.8%
Other countries (36)	IUSB +4.0 points	94.6%	90.6%

Concentration

Weight in the 10 largest Holdings

IUSB8.1%
VCOB24.3%

Securities held

IUSB17,809
VCOB806

Asset class

IUSB: Fixed Income
VCOB: Fixed Income

Holdings

Two bond funds rarely hold the same issues, so this page lists no shared Holdings. IUSB holds 17,809 securities, VCOB 806.

All 18,365 IUSB holdings⁠All VCOB holdings⁠

How we measure overlap

Each holding counts at its smaller weight in the two funds, summed over the full Holdings. Sector, country and asset class use the same rule on each fund’s split. Cash, FX and derivative lines stay out of the counts. Two bond funds get no overlap figure.

IUSB vs VCOB Cost

Overpaying VCOB vs IUSB

$3,889

On $10,000 over 30 years. 7% growth a year before fees, expense ratio only.

IUSB 0.06%
$1,270
VCOB 0.25%
$5,159

Amount$10,000

Years30 years

Cost over time

IUSB 0.06%
VCOB 0.25%
Overpaying

Year by year

Year	IUSB	VCOB	Overpaying
10	$110	$455	$345
20	$432	$1,769	$1,337
30	$1,270	$5,159	$3,889

Expense ratio

0.06%IUSB, cheaper
0.25%VCOB

IUSB0.06%VCOB0.25%

0.00%1.04%

Middle half of US Aggregate Bond funds
Median 0.34%

IUSB 10th cheapest of 114 funds

VCOB 39th cheapest of 114 funds

IUSB vs VCOB Dividends

Last 12 months to Oct 30, 2026

Yield (12M): IUSB 4.32%; VCOB No data
Payout (12M): IUSB $1.94; VCOB No data
Last payment: IUSB $0.15; VCOB $0.18
Ex-dividend: IUSB Oct 1, 2026; VCOB Oct 29, 2026
Paid on: IUSB Oct 6, 2026; VCOB Oct 30, 2026
Frequency: IUSB Monthly; VCOB Monthly

Distribution history

Per share, 2023 to 2026, same scale for both

IUSBMonthly · 45 paymentsAll IUSB payments⁠

VCOBMonthly · 11 paymentsAll VCOB payments⁠

IUSB vs VCOB Risk

Fall from peak · 5 years

This chart needs five years of history for both funds.

Risk facts

VolatilityStd dev, 3 years: IUSB 5.5%VCOB No data
Return per unit of riskSharpe ratio, 3 years: IUSB 0.25VCOB No data
Worst fallMax drawdown, 5 years: IUSB −17.4%VCOB No data
Market sensitivityBeta, 5 years: IUSB 0.96VCOB 0.11; Market = 1

IUSB and VCOB in the news

All news⁠

ETF Filings
BondBloxx registers a 0.22% core-plus bond ETF, and two funds still not for sale
Oct 21, 2026IUSB

Popular comparisons

IUSBAvsAGGA
iShares Core Universal USD Bond ETF · iShares Core U.S. Aggregate Bond ETF
Expense ratio
0.06% · 0.03%
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VCOBBvsAGGA
Voya Core Bond ETF · iShares Core U.S. Aggregate Bond ETF
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0.25% · 0.03%
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IUSBAvsSCHZA
iShares Core Universal USD Bond ETF · Schwab U.S. Aggregate Bond ETF
Expense ratio
0.06% · 0.03%
Category
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Expense ratio
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IUSBAvsSPABA
iShares Core Universal USD Bond ETF · State Street SPDR Portfolio Aggregate Bond ETF
Expense ratio
0.06% · 0.03%
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VCOBBvsSPABA
Voya Core Bond ETF · State Street SPDR Portfolio Aggregate Bond ETF
Expense ratio
0.25% · 0.03%
Category

IUSB vs VCOB

In short

Stated mandate

Why people hold it

Worth knowing

How IUSB and VCOB differ

Level by level

Sector

Country, concentration and asset class

Country by domicile

Concentration

Asset class

Holdings

Cost over time

Year by year

Distribution history

Fall from peak · 5 years

Risk facts

BondBloxx registers a 0.22% core-plus bond ETF, and two funds still not for sale

How IUSB and VCOB differ

Level by level

Sector

Country, concentration and asset class

Country by domicile

Concentration

Asset class

Holdings